Collapsible bowl



FIG. 1 is a top perspective view of the collapsible bowl, showing my new design;

FIG. 2 is a top view of the collapsible bowl;

FIG. 3 is a front view of the collapsible bowl, the back, left side, and right side views being identical; and,

FIG. 4 is a bottom view of the collapsible bowl. 

I claim the ornamental design for the collapsible bowl, as shown and described. 